title: Influence of magnetic field on terahertz wave generation in photorefractive periodically poled lithium niobate crystal.
abstract: By employing femtosecond pump-probe configuration, we successfully realized narrowband terahertz wave generation and detection in both photorefractive periodically poled lithium niobate (PPLN) and periodically poled Mg:LiNb(3) (PP-Mg:LN) crystal. Using an applied magnetic field, we achieved modulation of the terahertz wave in a photorefractive PPLN crystal. The terahertz wave depends strongly on the magnitude of the applied magnetic field in the photorefractive PPLN crystal. Terahertz wave independence of the magnetic field in PP-Mg:LN crystal was also identified. The interaction of the magnetic field and photorefractive PPLN crystal is believed to occur due to the Lorentz force, which results in the buildup of a space-charge field in a photorefractive PPLN crystal.
authors.affiliation: Department of Physics, Shanghai University, China.
authors.forename: Gaofang
authors.initials: G
authors.lastname: Li
authors.forename: Dong
authors.initials: D
authors.lastname: Li
authors.forename: Guohong
authors.initials: G
authors.lastname: Ma
authors.forename: Weimin
authors.initials: W
authors.lastname: Liu
authors.forename: Sing Hai
authors.initials: SH
authors.lastname: Tang